SMART SENSOR AS8900 Multi Gas Monitor Handheld gas detector Oxygen O2 Hydrothion H2S Carbon Monoxide CO

SMART SENSOR AS8900 Multi Gas Monitor Handheld gas detector Oxygen O2 Hydrothion H2S Carbon Monoxide CO

Is Smart Device: no
Measurement Range: O2: 0~30% VOL CO : 0~999 PPM H2S: 0~500 PPM Combustible Gas: % LEL
Model Number: AS8900
With LCD Screen Or Not: Yes
Gas Type: Oxygen / Carbon Monoxide / Hydrothion / Combustible Gas
DIY Supplies: ELECTRICAL
Brand Name: SMART SENSOR
Origin: Mainland China

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SMART SENSOR AS8900 Multi Gas Monitor Handheld gas detector Oxygen O2 Hydrothion H2S Carbon Monoxide CO

Is Smart Device: no
Measurement Range: O2: 0~30% VOL CO : 0~999 PPM H2S: 0~500 PPM Combustible Gas: % LEL
Model Number: AS8900
With LCD Screen Or Not: Yes
Gas Type: Oxygen / Carbon Monoxide / Hydrothion / Combustible Gas
DIY Supplies: ELECTRICAL
Brand Name: SMART SENSOR
Origin: Mainland China
Certification: CE
Gas Type: Oxygen / carbon monoxide / hydrogen sulfide / combustible gas
Measuring range: O2: 0~30% VOL CO : 0~999 PPM H2S: 0~500 PPM Combustible Gas: % LEL
TResolution: 0.1% / 1umo/mol(ppm) / 1%
Measuring Principle: Electrochemical principle, life for 2 years
Operating humidity: 15%-95%RH (Standard)
Alarm: Sound, Light Alarm. Adjustable Alarm values, Alarm sound up to 80 db.
Low/High Alarm/Alarm Setting: YES
Power Supply: 3.7V li-battery (included)
Product Weight/ Size: 200g/ 120.2*64.5*38.3mm
Packing: Gift Box
Multi-function Gas Detector: CO Gas Analyzer
4 in 1 Gas Analyzer: O2 Gas Detector
H2S Gas Monitor: Combustible Gas Detector

SMART SENSOR Handheld gas detector Oxygen O2 Hydrothion H2S Carbon Monoxide CO Combustible Gas 4 in 1 Multi-Gas gas analyzer

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1. All products with original packaging box,so that can protect the products well on the shipping way avoid damage.
2. The product contain the batterybecause of the limitation of the airline company.
3. Warranty:All units are with Retail box. and we offer Long warranty period of 2 years,in two years will repair for free.
4. Shipping Way:if you need it faster, you can choose Aliexpress standard shipping,also have China post airmail !

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Smart Sensor gas detector is a device that detects the presence of gases in an area, often as part of a safety system. This type of equipment is used to detect a gas leak and interface with a control system so a process can be automatically shut down. A gas detector can sound an alarm to operators in the area where the leak is occurring, giving them the opportunity to leave. This type of device is important because there are many gases that can be harmful to organic life.
Gas detectors can be used to detect combustible, flammable and toxic gases, and oxygen depletion, etc. This type of device is widely used in industry and can be found in locations, such as on oil rigs, to monitor manufacture processes and emerging technologies such as photovoltaic. They may also be used in firefighting.
While many of the standard gas detector units were originally fabricated to detect one gas, modern multifunctional or multi-gas devices are capable of detecting several gases at once. Some detectors may be utilized as individual units to monitor small workspace areas, or units can be combined or linked together to create a protection system.

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1. Portable monitor for detect O2, CO,H2S, LEL.

2. Respond quickly, detect precisely, sound,light,vibration three types alarms indication.

3. With portable plastic case, built-in sponge, no need to worry damage in the delivery.

4. USB powered, convenient to use.

5. Large LCD screen display, can read in dark.

6. This multifunctional rechargeable detector can test for combustible gas, oxygen, carbon monoxide, hydrogen sulfide at the same time.

7. With a large LCD screen display the measured results, you can get 4 gases concentration at a glance.

8. This multigas monitor has sound and light vibration alarm, you can set audio alarm decibel that can give you a obvious prompt.

9. Adopting advanced sensor, which gives a quick and accurate measurement.

10. Portable and handheld, easy to operate and carry. Widely used in shipping, mining, oil exploitation, chemical, gas pipeline, tunnel construction, coal, metallurgy, paper, fire, municipal, textile and other industries.

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Model	ST8900	AS8900
Color	Orange	Yellow
Material	ABS plastic	ABS Plastic
Power Supply	3.7V li-battey(Bulit-in)	3.7V li-battery(Built-in)
Operation Temperature	-10°C-50°C	-10°C-50°C
Operation Humidity	15%-95%RH	15%-95%RH
low/High alarm/alarm setting	Yes	Yes
Gas Type	O2/CO2/H2S/Combustible Gas	O2/CO2/H2S/Combustible Gas
Battery working time	6 hours(no alarm)	6 hours(no alarm)
Warm up time	＜20 seconds	＜20 seconds
Resolution	CO: 1ppm, H2S: 1ppm, O2: 0.1%VOL, LEL: 1%LEL	CO: 1ppm, H2S: 1ppm, O2: 0.1%VOL, LEL: 1%LEL
Maximum open circult voltage	≤4.2V	≤4.2V
Package size	26217cm	26217cm
Pcakage Contents	1Multi-Gas meter 1Instruction manual 1Charging adapter 1USB cable 1*Calibration certificate	1Multi-Gas meter 1Instruction manual 1Charging adapter 1USB cable 1*Calibration certificate

Sensor specification
Gas	Range	Resolution	T90
Oxygen (O2)	0~30%	0.1%	10sec
Combustile (LEL)	0~100%LEL	0.1%	35sec
Carbon Monoxide (CO)	0~999ppm	1ppm	50sec
Hyrogen Sulfide (H2S)	0~500ppm	1ppm	30sec

The effect of oxygen-deficient and oxygen-enriched atmospheres
The concentration of oxygen(%)	Symptoms (atmospheric pressure)
100%	Deadly, 6 minutes(Absolutely airtight environment, such as hyperbaric oxygen chamber
50%	Deadly, can be cured after 45 minutes treatment. (Absolutely airtight environment, such as hyperbaric oxygen chamber)
>23.5%	Rich oxygen
20.9%	Normal
19.5%	Minimum
15~19%	Reduce efficiency, and lead to problems of head,lung and circulation system
10~12%	Shortness of breath, loss of judgment, purple lips
8~10%	governance loss, syncope, unconscious, pale, nausea and vomiting
6~8%	8 minutes, blood pressure, weak heartbeat,mouth breathing, quickly stopped breathing
4~6%	40 seconds, convulsions, respiratory arrest, death
Harm of carbon monoxide
Content of carbon monoxide in Air	Suction time and showed symptoms of poisoning
50ppm	Maximum
200ppm	2~3 hours , a slight headache, dizziness, nausea
400ppm	2hours, forehead pain, life risk after 3hours
800ppm	Headache, nausea within 45minutes,death within 2~3hours
1600ppm	Headache, nausea within 20 minutes ,death within 1 hour
The concentration of Hydrogen and symptoms of poisoning
Range		Symptoms of poisoning
Unit: ppm	Unit: mg/m3
0.025~0.1	0.035~0.14	Olfactory sensation
50~100	70~140	Slight symptoms of poisoning within 1~2 hours
100~150	140~210	Olfactory nerve paralysis,obvious poisoning symptoms
200~250	210~350	Can afford 0.5~1 hour, but sequela
200~350	350~490	Poisoning in 6~8 minutes,death within 4~8 hours
350~500	490~700	Seriously poisoned within 0.5~1hour,death within 1~4 hours
500~600	700~835	Seriously poisoned within 1minute,death within 0.5~4 hours
600~700	835~980	Death within 2~15 minutes
700~1000	980~1400	Imediately die

Commonly used flammable gas explosion limit Table
Name	Chemical for mula	The explosion limit in air (V%)
		Upper limit LEL	Lower limit LEL
Methane	CH4	5	15
Ethane	C2H6	3	15.5
Propane	C3H8	2.1	9.5
Butane	C4H10	1.9	8.5
Gasoline(Liquid)	C4-C12	1.1	5.9
Kerosene(Liquid)	C10-C16	0.6	5
City gas		4
liquefied petroleum gas		1	12
Turpentine(Liquid)	C10-C16	0.8

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ST8900:

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AS8900:

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ST8930:

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AS8930:

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ST8930+ST8900:

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AS8930+AS8900:

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